John w



(No Model.)

J. W. ORPI-IY.

TUBE.

Patented Oct. 9, 1888.

Inventor MA me-r? eys N. PEIERS, Pholoumo h hu, Washington. D. c.

UNTTE STATES ZATENT. Trice.

JOHN W. ORPHY, OF ROCHESTER, NEW YORK, ASSIGNOR TO THE C. T. HAM MANUFACTURING COMPANY, OF SAME PLACE.

TUBE.

SPEGIFICAI'TON forming part of Letters Patent No. 390,699, dated Qctober 9, 1.888.

Application filed March 19, 1888.

To all whom, it may concern;

Be it known that 1, JOHN W. ORPHY, of Rochester, New York, have invented certain Improvements in Side Tubes for Lanterns, of

which the following is aspeeification, reference being bad to the accompanying drawings.

My invention relates to certain improvements in continuous doubleel bowed side tubes for lanterns ofthe type shown in my patents,

[0 Nos. 335,234 and 335,235, dated February 2,

My present improvements are fully described and illustrated in the following specification and accompanying drawings and the novel features thereofspecified in the claims annexed to the said specification.

My improvements in side tubes for lanterns are represented in the accompanying drawings, in which- Figu re 1 represents the notched blank. Fig. 2 is a side view of the notched blank bent to form a trough. Fig. 3 is a transverse section of the same. Fig. 4 represents the inner side of one of the tubes after it has been formed into the half-round shape and before bending at the elbow. Fig. 5 is a side view of the finished tube. Fig. 6 is a transverse section of the same. Fig. 7 is a longitudinal section of the tube when formed into the half-round o shape on the plane indicated by the dotted line 00 as, Fig. 2, showing in an exaggerated fashion the outward curve given to the edges of the tube at one side of the notches. Fig. 8 is a side view of the tube as seen at right angles with Fig. 5.

In the manufacture of my improved side tube 1 form the sheetmetal blank A, Fig. 1, of suitable dimensions to produce the finished tube, as indicated in Fig. 5, in any ordinary or preferred manner. The blank is provided with notches-F F on its opposite edges, said notches being located at the point where the elbows are designed to come in the finished tube, and being made of such a depth that the metal left between them is equal to the width of the tube as represented in Fig. 8. The edges of the notches are also given a curved form, so that when the tube is finally bent at the elbows the edges overlap each other, thus securing greater strength in the joint when Serial No. 267,062. (No model.)

soldered. The blank is first formed into a trough, as represented in Figs. 2 and 3. This operation is performed with a suitable die. The longitudinal corrugation or stiffening-rib G may be formed either at the same time the blank is bent into the trough-like shape or I subsequently.

The neXt operation consists in bending the edges of the trough inward, so that they lap over each other slightly, thus producinga tube of halfround or approximately half-round form, as represented in Figs. 5 and 6. This operation is performed in suitable dies over a mandrel of suitable shape. It is to be observed that the edges of the notches F F are 6 curved outward on one side, as indicated in the longitudinal section, Fig. 7, so that when thenotches are closed by bending the tube at the elbows the edges will readily overlap, as indicated by the full and dotted lines in Fig. 5, without interfering with each other, and for1ning a strong joint when soldered.

The final operation in making my improved tube consists in bending it at the elbows and closing the longitudinal seam on the inside of the tube and the joints at the elbows by soldering.

The eyelet I is placed in the outer flat wall of the tube, for the purpose of receiving the bail of the lantern, a hole, L, Fig. 1, being s punched for the eyelet when the blank is formed or afterward.

The corrugation G projects outward beyond the general surface of the tube and materially strengthens the tube and prevents its being 8 dented or injured by an accidental blow.

My improved half-round tube is very strong and neat in appearance and its manufacture is rapid and cheap, as it requires fewer opera-- tions and a less number of tools than any other tube with which am acquainted.

- I claim 7 1. Theherein-described double-elbowed side tube for lanterns composed of three sections, the body-section being rounded upon the inner side andhaving a stiffening-rib upon the other, and the end sections bent so as to extend parallel with each other, but at or nearly at a right angle to the body or main section, the backs of these several sections being consti- 10o tuted of one continuous piece and having the tudinal seam on the inside andhasalongitudioverlapping edges of the main and end pornal raised stiffening-rib on the outer side,subtions secured together, substantially as and stantially as and for the purposes set forth.

for the purposes set forth. JOHN XV. ORPHY.

2. Thehereindesoribed double elbowed side \Vilnesses: tube for lanterns, the main section of whiehis O. T. HAM,

rounded and provided with a lapped longi- GEO. B. SELDEN. 

